Torque responsive device



y 2 943. M, J. KITTLER I 3 5 TORQUE RESPONSIVEDEVICE' Filed Dec. 2, 1940 2 Sheet s-Sheet 1 INVENTOR. WI [on JI (Mt/er July 20, 1943. M. J. KITTLER TORQUE RESPONSIVE DEVICE Filed Dec. 2', 1940 2 Sheets-Sheet 2 m E 2. w I

swam: DRIVEN SHAFT PROPELLER DRIVE 5mm Fig.3.

' INVENTOR. (WI/for: J. Kilt/er through the rod 54 to the piston 55 which slides in the cylinder 56 and creates a pressure in the tube l2 corresponding to the torque.

The engine drive is througha solid shaft 58 50 and 5| would rotate clockwise carrying with them in a clockwise direction the torque'arm 53."

In order to take care of leakage; a small oil pump 60 supplies oil under pressure through a pipe 6|. When the pressure in the cylinder 56 increases,-the piston 55 rises and allows oil to return making the pipe 62 large and restricting the pipe 6| slightly, the pressure in the chamber 56 corresponds to the torque, and is not influenced by the oil pump. I

" Operation In the normal operation of the engine, assuming through the pipe 62 to the oil inlet pipe 63. By

that the oil pump 60 is operating at a speed proportional to the engine speed, oil pressure is gen erated in the pump and delivered through the pipe 6| to the chamber 56.

The piston 55 rises,

and uncovers the relatively large port leading to the pipe 62, permitting oil to flowback to the pipe 63 and thus return to the oil pump 60. Hence the system is maintained full of oil'at all times, when the oil pressureis below'that corres-po'nding to 70%. The spring {5 is sufliciently stiff to maintain the valve 'lli 'seated and the" carburetor operates in the normal manner.

When the torque exceeds 70% the pston l4 moves to the right and uncovers the opening in which the valve I6 seats. As the torque inflow to said second nOzZIaandmeansresponsive to said torqueresponsive means for 'openingjsaid i creases, the quantity of fuel flowing past the tapered stem ll of the valve l6 also increases.

Pressure in l8 corresponds to that of the atmosphere by reason of the opening .29.-"Gasoline therefore fiows along the pipe l8, discharges variable venturi between the throttle valve sec- 'through the opening I9 into the throat of the, l

tions 40, as in Fig. 3 in a well known manner, 7

The flow. along I8 is uninfluenced by the'suction in the throat of the variable venturi. Addition- 7 a1 fuelwillbe admitted to the pipe l8 as long as this added fuel causes an increase of torque, This device, therefore, willautomatically deliver a mixture which corresponds to maximum torque.

What I claim is: 1. In an internal combustion tion means comprising a source of fuel supply under a substantially constant pressure, a fuel supply chamber connected thereto, a pressure reducing valve therefor adapted'to maintain a :rel-

atively low pressure of constant value-in said chamber, a fuel outlet passage from said chamber adapted to discharge into said carburetor, 8.

- second fuel passage connecting the high pressure engine provided with torque responsive means, external carburefuel directlyto the carburetor, a second valve in said passage, and means'responsive'jto said engine torque responsive meansforiopening l said secondvalve whenthe troque exceeds a pre:

determined minimum value. V

2; In an internal combustion engine having: torque [responsive v device, the v combination with a throttle controlled air' inlet of two fuel f s having restricted-orifices arranged-to discharge into said inlet adjacent to said throttle, t me-1*} l chanically operated fuel pump for supplying liquid fuel to said nozzles, means controlledby' thethrottle for varying the. area of thedis'chme orifice of one of said nozzlesand means actuated the area-of the other orifice; l r a l by said-'torque responsive means for. controlling" I 3, Fuel control meanstor'an internal combus- I I tion engine'having torque responsive means, and

a carburetor comprising a'source oi'fuei' having a substantially constant pressure, a fuel/nozzle leading to'said carburetor, a second fuel passage,

a ula i z va 'v in semiemi d: 1 means responsive'to said torque responsive means! I has ex for opening said valve after thel toique ceeded '10%of the maximum torque 4. Fuel .control means fora intern constant, additional ,fuel admissionfmeansf from said constant pressure sourcefsaid additional fuel means being responsive to said'to'r'qu'e responsive means and being inoperative 'when the-- torque n i v I less than 70% ofthe': maximum torque} 5' f 5. In internal inbusticn engine torque responsive means, ai carburetoflhavlng' a a mixing chamber 01" Venturi fornif 'a'ftuei nozz'le discharging therein, asourceoffuel supplyjconnected theretjo,"'a second fuell-nozzle-discharglngf, i

into the mixture chamben'avalve ccntrolling the valve when the, torqueexceeds avpredc terminedgjf a minimurn value and for moving'sdidvaivefintopo' a sition at-which the engine automatically delivers I maximum-torque. r v 6. An internal combustion-.,engine having] torque responsive means, a carburetor, a mixing chamber; a fuel no'zzle dischargirig therein, a

source of ,fuel supply'connectc'd theretoi la sec a 0nd fuel nozzle also lconnectedwto said sourceoi fuel 'supply,ia valvecontrollin'g thekvfiow to" the L second nozzle, and meansg'.responsive toi'sam torque responsive means for openingsaidflvalve when 8 7 8* predetermined mini' I i mum value.:

7. An internal combustion enginegaftorqu responsive means, a carburetor, a; mining chain'- ber, a fuel-nozzle sdischargingathereingunder the 1 influence of the suctloncin said-carburetor, a}

source ofv fuel under pressure, a se'condflffuel um:

zle connected thereto,ayx-vaivelcontrollingfthc 5 flow to said second nozzle," andmeans'responsive j, to said torque respcnsiveglmeansrfor operating s d v lvewhenthertorqueexceedsapredetermined minimum-value:

a a combus-"j tion engine having torque responsive means oom- 'prising a source of "fuel unden'a 5substantially I, ,constant pressure, means 'foifi admitting fueland air to said engine, said meansbein'gqfadapted to maintain 'the fuel and airf'raitiossubstantiallyf" 

